String[] ls = {"A","B","C","V","G","H","K","M","N","S","P","U","V","W","S"};String [] es = {"B","K","S","U","N"};参照数组es中的字母顺序对数组ls进行优先排序,对没有在es数组中出现的字母排在数组的最后,不用排序,输出排好序的数组ls